Variable Valve Timing Control Solenoid Replacement
What is a variable valve timing solenoid?
Variable valve timing systems have several components required to operate, perhaps the timing control solenoid is the most important. The variable valve timing control solenoid is responsible for engaging and disengaging simple variable valve timing systems, and will constantly adjust more intricate systems. In both systems, the result is more power, and better fuel economy.
How does the variable valve timing solenoid work?
The variable valve timing control solenoid is electrically controlled by the power management computer or the electronic control unit. When condition are met, the computer will actuate the solenoid, and valve timing will be retarded or advanced. Many solenoids accomplish this by directing and limiting oil pressure to the solenoid.
What are the symptoms related to a bad variable valve timing solenoid?
The check engine light, and loss of power are the most typical symptoms of the variable valve timing control solenoid failure. There may be a leak around the solenoid, but this generally will not cause failure. When the solenoid fails, the driver feels a loss of power because the timing is no longer advancing with engine speed. The less fortunate form of failure is from the solenoid advancing at all times. This will lead the engine speed rising and falling at idle, vibrations at idle, and possible misfires at idle. In any case of a failed variable valve timing solenoid, there will be poor fuel mileage until the issue is corrected, because the engine can no longer adjust for maximum economy while cruising.